Op-Ed by Dr. Kelly Doran on the impact of homelessness on the health care system. The article mentions the Consortium's Hospital HOPE Count as a means to better understand the health needs of NYC's homeless population and the implications of homelessness on our health care system. Kelly Doran is an instructor in the departments of emergency medicine and population health at the NYU School of Medicine and a practicing emergency physician at Bellevue Hospital Center in New York.